US20060205561A1 - Drive assembly for wind turbines - Google Patents
Drive assembly for wind turbines Download PDFInfo
- Publication number
- US20060205561A1 US20060205561A1 US11/341,575 US34157506A US2006205561A1 US 20060205561 A1 US20060205561 A1 US 20060205561A1 US 34157506 A US34157506 A US 34157506A US 2006205561 A1 US2006205561 A1 US 2006205561A1
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- US
- United States
- Prior art keywords
- ring
- drive assembly
- assembly according
- bearing
- supporting structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 69
- 238000005452 bending Methods 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000000254 damaging effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
- F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
- F05B2260/403—Transmission of power through the shape of the drive components
- F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
- F05B2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclic, planetary or differential type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
- F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H2001/289—Toothed gearings for conveying rotary motion with gears having orbital motion comprising two or more coaxial and identical sets of orbital gears, e.g. for distributing torque between the coaxial sets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Definitions
- This invention relates to a drive assembly and to a gear transmission unit for a wind turbine.
- a wind turbine rotor drives the low speed shaft of a gear transmission unit, which transforms torque and speed of the rotor to the required torque and speed of an electrical generator.
- Integration of the components in a wind turbine is a way to reduce the weight and to make the drive assembly more compact, but it is important that the design and execution of the drive assembly avoids mutual interference of the external and internal loads on the different components. It is also important that the construction of an integrated drive assembly allows effective lubrication to be achieved economically and reliably.
- the present invention seeks to provide an improved drive assembly and an improved gear transmission unit for a wind turbine and which permits an advantageous integration of components.
- a drive assembly for a wind turbine comprises a rotor hub, supporting structure such as a turbine nacelle, a planetary type gear transmission unit comprising sun, planet and ring gears and a planet carrier, said ring gear being non-rotatably secured to said supporting structure, a main bearing which rotatably supports the rotor hub and planet carrier relative to said ring gear and supporting structure, and said drive assembly comprising two substantially independent force transmission paths for transmission of forces reacting with forces exerted by the wind turbine rotor hub, a first of said force transmission paths acting from the rotor hub via said main bearing to the supporting structure primarily for transmission of overhang load forces and bending moment forces and a second of said force transmission paths acting from the rotor hub via said planet carrier primarily for transmission of rotational forces.
- a gear transmission unit for use in a wind turbine to transmit forces from a rotor hub to a generator comprises a planetary type gear transmission unit comprising sun, planet and ring gears and a planet carrier, said ring gear being adapted for non-rotatably securing to supporting structure such as a turbine nacelle, a main bearing which rotatably supports the planet carrier and is adapted for rotatably supporting a rotor hub relative to said ring gear and supporting structure, and said gear transmission unit comprising two substantially independent force transmission paths for transmission of forces reacting in use with forces exerted by the wind turbine rotor hub, a first of said force transmission paths acting via said main bearing to the supporting structure primarily for transmission of overhang load forces and bending moment forces and a second of said force transmission paths acting via said planet carrier primarily for transmission of rotational forces.
- the invention teaches that the overhung load forces and bending moments from the rotor are taken by a bearing which is directly connected to stationary parts instead of to the torque transmitting low speed part of the gear unit.
- said main bearing lies at a position substantially aligned axially with the axial position of at least the ring gear of the gear transmission unit.
- the sun, planet and ring gears lie in a transverse plane (perpendicular to the rotation axis of said rotational forces) which also contains said main bearing.
- the main bearing comprises an inner ring bearing surface of a diameter greater than that of the toothed surface of the ring gear, and that at all radial positions inwards of the toothed surface of the ring gear the second force transmission path is substantially independent of the first force transmission path.
- the second of said force transmission paths comprises a radially extending torque transmission member which is torsionally stiff but relatively compliant in an axial direction parallel with the axis about which the rotational forces act whereby movement of the hub in consequence of bending forces is accommodated at least in part by deflection of the torque transmission member.
- the torque transmission member thereby isolates the gear transmission unit from the potentially damaging effects of bending deflections experienced by the rotor hub relative to the main rotational axis of the gear transmission unit.
- the present invention accordingly provides, in a further of its aspects, a drive assembly in which the main rotor bearing and gear transmission unit for a wind turbine are of an integrated construction.
- the wind turbine rotor hub preferably is connected to the outer ring of the main bearing.
- the bearing inner ring preferably is supported by, and may be directly mounted on, the ring gear of the planetary gear stage, or on a flange which connects the ring gear to the supporting structure.
- the ring gear may provide a bearing surface for rotatable bearing components of the main bearing.
- the ring gear may provide axial and radial locations for the main bearing.
- the ring gear may have a radially outer surface of a stepped profile to define a shoulder for axial location of an inner bearing ring of the main bearing.
- the inner bearing ring may be secured axially between said shoulder and said supporting structure.
- the ring gear may be provided with a reinforcing ring, and said reinforcing ring may extend axially and or radially beyond the toothed surface of the ring gear. Said reinforcing ring may provide an axial location of the main bearing.
- the main bearing may comprise a double taper bearing, and said double taper bearing may comprise a single outer bearing ring.
- the rotor hub may be rigidly secured relative to said single outer bearing ring.
- the double taper bearing may comprise rollers arranged in an O configuration in which the rollers of one series increase in diameter in a direction away from the rollers of the other series of the pair.
- the present invention provides a wind turbine comprising rotors, a generator and a drive assembly of a type in accordance with the present invention.
- the gear transmission unit e.g. a housing thereof, may be arranged to support an electrical generator.
- FIG. 1 is an elevation view of a wind turbine having a drive assembly of the present invention
- FIG. 2 is a sectional view of part of a gear transmission unit in accordance with the present invention.
- FIG. 3 shows part of FIG. 2 in more detail
- FIGS. 4, 5 and 6 each show variations of the construction of FIGS. 2 and 3 ;
- FIG. 7 shows part of FIG. 6 in more detail
- FIGS. 8 and 9 each show further variations of the construction of FIGS. 2 and 3 .
- a wind turbine 10 (see FIG. 1 ) comprises a gear transmission unit 11 which acts to transmit torque from rotor blades 12 and rotor hub 14 to an electrical generator 13 , the gear transmission unit comprising an epicyclic gear unit.
- the gear transmission unit and generator are housed in and supported by a nacelle 15 .
- the gear transmission unit 11 comprises an epicyclic gear unit having four planet gears 25 , a sun gear 27 a planet carrier 28 , and a ring gear 24 which is non-rotatably mounted relative to the nacelle structure 15 .
- the sun gear is connected to an output shaft (not shown) which connects either to a further gear unit or direct to the rotor of the generator 13 .
- the radially outer surface 29 of the ring gear 24 provides location and support for the inner ring 30 of a main bearing 23 .
- the outer ring 31 of the main bearing has secured thereto the rotor hub 14 and, interposed between the rotor hub and ring 31 , the outer region 22 of the planet carrier 28 .
- the planet carrier 28 comprises four bearing support studs 26 uniformly circumferentially spaced to locate bearings 32 which rotatably support the four planet gears 25 .
- the planet carrier 28 has an annular region 33 which extends radially between the radial position of the bearing studs 26 and the outer region 22 and is designed to be relatively stiff, in a circumferential direction about the Y axis, for transmission of torque between the region 22 and the bearing studs 26 , but to be relatively flexible about the X and Z axis.
- FIG. 4 shows a variation 40 in which the planet carrier 41 is provided with three integral and uniformly circumferentially spaced studs 42 which support a planet bogie plate 43 .
- the planet bogie plate 43 provides support for three circumferentially uniformly spaced shafts 44 arranged each to self adjust in angular position on the plate 43 .
- Each shaft 44 provides support, at opposite sides if the plate 43 , for a pair of bearings 45 , 46 about which each of a pair of planet gears 47 , 48 are rotatably mounted for engagement with the ring gear 49 .
- the planet carrier 56 is of a cage type design.
- each of three planet bearing support shafts 51 is supported at one axial end 52 by the part 53 of the planet carrier that extends radially outwards to be supported by the outer ring of the main bearing 54 whilst the other end 55 is supported by an auxiliary driving plate 57 carried by three circumferentially uniformly spaced supports 58 provided at positions interposed circumferentially between the shafts 51 .
- the plate 57 is provided with a central aperture 59 to which an output shaft 60 extends from the sun gear 61 .
- FIG. 6 shows a further variation of the construction of FIGS. 2 and 3 .
- the planet carrier is constructed substantially similar to that described with reference to FIG. 5 .
- the ring gear 63 differs in so far as part of the outer periphery of the gear is surrounded by a reinforcing support ring 64 .
- the reinforcing ring is either formed integrally, e.g. forge rolled, with the outer periphery of ring gear 63 or permanently secured thereto, for example by being a shrink fit thereon.
- the presence of the support ring, provided axially at a position spaced from the nacelle structure 15 provides an abutment surface 65 for axial location of the inner ring of the main bearing 66 .
- the main bearing 66 may be a double taper type bearing, shown in more detail in FIG. 7 .
- the main bearing comprises an inner ring of a split construction comprising two taper rings 67 .
- the bearing additionally comprises a single outer ring 68 of double taper form.
- FIG. 8 A further variation of the construction of FIGS. 2 and 3 is shown in FIG. 8 .
- this construction 80 the inner ring of the main rotor bearing 81 contrasts with aforedescribed constructions in so far as it is not directly mounted on or supported by the ring gear 82 . Instead, the inner ring of the bearing 81 is supported by a flange assembly 83 secured to the nacelle structure 15 .
- the bearing inner ring is connected substantially directly to the nacelle structure 15 at position 91 .
- FIGS. 8 and 9 show that the inner ring of the main bearing is non-rotatably secured relative to the nacelle structure 15 , it is to be understood that the outer ring of the main bearing may be secured to the nacelle structure and that the rotor hub and planet carrier may be rotatably supported by the inner ring of the bearing.
- the sun, planet and ring gears are all substantially aligned with one another as considered in an axial direction parallel with the axis of rotation of the planet carrier.
- the main bearing comprises an inner ring bearing surface the diameter of which is greater than that of the toothed surface of the ring gear.
- a benefit arising from the drive assembly, and the gear transmission unit of the present invention as used in a wind turbine is that the overhung loads generated by the wind turbine rotor blades have only a minimal effect on the planet driving components and on the gear meshing contact of the planetary gear stage. This allows for an increased power rating of the gear transmission unit or a reduction of dimension for a given power rating as compared with hitherto known constructions. It is also to be appreciated that the forces generated in gear meshing of the planets have only a minimal effect on the load distribution over the bearing rollers in the main bearing, thus increasing the load capacity of the main bearing or allowing for reduction of dimensions of that bearing for a given load capability.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
- Retarders (AREA)
Abstract
Description
- This invention relates to a drive assembly and to a gear transmission unit for a wind turbine.
- There is a continuing demand for larger wind turbines especially for offshore sites due to scarcity of suitable sites and cost of civil works. At the same time the requirements for reduction of size and weight of the machines and their components become more and more important. Typically a wind turbine rotor drives the low speed shaft of a gear transmission unit, which transforms torque and speed of the rotor to the required torque and speed of an electrical generator.
- Integration of the components in a wind turbine is a way to reduce the weight and to make the drive assembly more compact, but it is important that the design and execution of the drive assembly avoids mutual interference of the external and internal loads on the different components. It is also important that the construction of an integrated drive assembly allows effective lubrication to be achieved economically and reliably.
- The present invention seeks to provide an improved drive assembly and an improved gear transmission unit for a wind turbine and which permits an advantageous integration of components.
- In accordance with one aspect of the present invention a drive assembly for a wind turbine comprises a rotor hub, supporting structure such as a turbine nacelle, a planetary type gear transmission unit comprising sun, planet and ring gears and a planet carrier, said ring gear being non-rotatably secured to said supporting structure, a main bearing which rotatably supports the rotor hub and planet carrier relative to said ring gear and supporting structure, and said drive assembly comprising two substantially independent force transmission paths for transmission of forces reacting with forces exerted by the wind turbine rotor hub, a first of said force transmission paths acting from the rotor hub via said main bearing to the supporting structure primarily for transmission of overhang load forces and bending moment forces and a second of said force transmission paths acting from the rotor hub via said planet carrier primarily for transmission of rotational forces.
- In accordance with another aspect of the present invention a gear transmission unit for use in a wind turbine to transmit forces from a rotor hub to a generator comprises a planetary type gear transmission unit comprising sun, planet and ring gears and a planet carrier, said ring gear being adapted for non-rotatably securing to supporting structure such as a turbine nacelle, a main bearing which rotatably supports the planet carrier and is adapted for rotatably supporting a rotor hub relative to said ring gear and supporting structure, and said gear transmission unit comprising two substantially independent force transmission paths for transmission of forces reacting in use with forces exerted by the wind turbine rotor hub, a first of said force transmission paths acting via said main bearing to the supporting structure primarily for transmission of overhang load forces and bending moment forces and a second of said force transmission paths acting via said planet carrier primarily for transmission of rotational forces.
- Accordingly, the invention teaches that the overhung load forces and bending moments from the rotor are taken by a bearing which is directly connected to stationary parts instead of to the torque transmitting low speed part of the gear unit.
- Preferably, as considered in an axial direction parallel with the axis of rotation of the planet carrier, said main bearing lies at a position substantially aligned axially with the axial position of at least the ring gear of the gear transmission unit.
- Preferably the sun, planet and ring gears lie in a transverse plane (perpendicular to the rotation axis of said rotational forces) which also contains said main bearing.
- Other preferred features are that the main bearing comprises an inner ring bearing surface of a diameter greater than that of the toothed surface of the ring gear, and that at all radial positions inwards of the toothed surface of the ring gear the second force transmission path is substantially independent of the first force transmission path.
- It is further preferred that the second of said force transmission paths comprises a radially extending torque transmission member which is torsionally stiff but relatively compliant in an axial direction parallel with the axis about which the rotational forces act whereby movement of the hub in consequence of bending forces is accommodated at least in part by deflection of the torque transmission member. The torque transmission member thereby isolates the gear transmission unit from the potentially damaging effects of bending deflections experienced by the rotor hub relative to the main rotational axis of the gear transmission unit.
- The present invention accordingly provides, in a further of its aspects, a drive assembly in which the main rotor bearing and gear transmission unit for a wind turbine are of an integrated construction. The wind turbine rotor hub preferably is connected to the outer ring of the main bearing. The bearing inner ring preferably is supported by, and may be directly mounted on, the ring gear of the planetary gear stage, or on a flange which connects the ring gear to the supporting structure. In an alternative construction the ring gear may provide a bearing surface for rotatable bearing components of the main bearing.
- The ring gear may provide axial and radial locations for the main bearing. The ring gear may have a radially outer surface of a stepped profile to define a shoulder for axial location of an inner bearing ring of the main bearing. The inner bearing ring may be secured axially between said shoulder and said supporting structure.
- The ring gear may be provided with a reinforcing ring, and said reinforcing ring may extend axially and or radially beyond the toothed surface of the ring gear. Said reinforcing ring may provide an axial location of the main bearing.
- The main bearing may comprise a double taper bearing, and said double taper bearing may comprise a single outer bearing ring. The rotor hub may be rigidly secured relative to said single outer bearing ring. The double taper bearing may comprise rollers arranged in an O configuration in which the rollers of one series increase in diameter in a direction away from the rollers of the other series of the pair.
- In a yet further of its aspects the present invention provides a wind turbine comprising rotors, a generator and a drive assembly of a type in accordance with the present invention.
- The gear transmission unit, e.g. a housing thereof, may be arranged to support an electrical generator.
- Embodiments of the invention will now be described, by way of example only, with reference to the accompanying diagrammatic drawings in which:
-
FIG. 1 is an elevation view of a wind turbine having a drive assembly of the present invention; -
FIG. 2 is a sectional view of part of a gear transmission unit in accordance with the present invention; -
FIG. 3 shows part ofFIG. 2 in more detail; -
FIGS. 4, 5 and 6 each show variations of the construction ofFIGS. 2 and 3 ; -
FIG. 7 shows part ofFIG. 6 in more detail, andFIGS. 8 and 9 each show further variations of the construction ofFIGS. 2 and 3 . - A wind turbine 10 (see
FIG. 1 ) comprises agear transmission unit 11 which acts to transmit torque fromrotor blades 12 androtor hub 14 to anelectrical generator 13, the gear transmission unit comprising an epicyclic gear unit. The gear transmission unit and generator are housed in and supported by anacelle 15. - The
gear transmission unit 11 is now described in more detail with reference toFIGS. 2 and 3 . Thegear transmission unit 11 comprises an epicyclic gear unit having fourplanet gears 25, a sun gear 27 aplanet carrier 28, and aring gear 24 which is non-rotatably mounted relative to thenacelle structure 15. - The sun gear is connected to an output shaft (not shown) which connects either to a further gear unit or direct to the rotor of the
generator 13. - The radially
outer surface 29 of thering gear 24 provides location and support for theinner ring 30 of a main bearing 23. - The
outer ring 31 of the main bearing has secured thereto therotor hub 14 and, interposed between the rotor hub andring 31, theouter region 22 of theplanet carrier 28. - The
planet carrier 28 comprises fourbearing support studs 26 uniformly circumferentially spaced to locatebearings 32 which rotatably support the fourplanet gears 25. Theplanet carrier 28 has an annular region 33 which extends radially between the radial position of thebearing studs 26 and theouter region 22 and is designed to be relatively stiff, in a circumferential direction about the Y axis, for transmission of torque between theregion 22 and thebearing studs 26, but to be relatively flexible about the X and Z axis. - In the aforedescribed construction the torque acting on the
rotor hub 14 under action of therotor blades 12 is transmitted to theplanet gears 25 via theplanet carrier 28 rotatably mounted at isouter region 22 to theouter ring 31 ofbearing 23. Bending moments and axial forces in the Y direction exerted by the rotor hub in this construction are transmitted direct to thebearing 23. The flexibility of the annular portion 33 of theplanet carrier 28 assists to substantially isolate those forces from the planet gears. -
FIG. 4 shows avariation 40 in which theplanet carrier 41 is provided with three integral and uniformly circumferentially spaced studs 42 which support aplanet bogie plate 43. Theplanet bogie plate 43 provides support for three circumferentially uniformly spacedshafts 44 arranged each to self adjust in angular position on theplate 43. Eachshaft 44 provides support, at opposite sides if theplate 43, for a pair ofbearings planet gears ring gear 49. - In a
further variation 50, shown inFIG. 5 , theplanet carrier 56 is of a cage type design. In this construction each of three planet bearingsupport shafts 51 is supported at one axial end 52 by thepart 53 of the planet carrier that extends radially outwards to be supported by the outer ring of themain bearing 54 whilst theother end 55 is supported by anauxiliary driving plate 57 carried by three circumferentially uniformly spacedsupports 58 provided at positions interposed circumferentially between theshafts 51. Theplate 57 is provided with acentral aperture 59 to which anoutput shaft 60 extends from thesun gear 61. -
FIG. 6 shows a further variation of the construction ofFIGS. 2 and 3 . In this construction the planet carrier is constructed substantially similar to that described with reference toFIG. 5 . However thering gear 63 differs in so far as part of the outer periphery of the gear is surrounded by a reinforcingsupport ring 64. The reinforcing ring is either formed integrally, e.g. forge rolled, with the outer periphery ofring gear 63 or permanently secured thereto, for example by being a shrink fit thereon. The presence of the support ring, provided axially at a position spaced from thenacelle structure 15 provides anabutment surface 65 for axial location of the inner ring of the main bearing 66. The main bearing 66 may be a double taper type bearing, shown in more detail inFIG. 7 . The main bearing comprises an inner ring of a split construction comprising twotaper rings 67. The bearing additionally comprises a singleouter ring 68 of double taper form. - A further variation of the construction of
FIGS. 2 and 3 is shown inFIG. 8 . In thisconstruction 80 the inner ring of the main rotor bearing 81 contrasts with aforedescribed constructions in so far as it is not directly mounted on or supported by thering gear 82. Instead, the inner ring of thebearing 81 is supported by aflange assembly 83 secured to thenacelle structure 15. In the construction 90 ofFIG. 9 the bearing inner ring is connected substantially directly to thenacelle structure 15 atposition 91. - Whilst the constructions of
FIGS. 8 and 9 show that the inner ring of the main bearing is non-rotatably secured relative to thenacelle structure 15, it is to be understood that the outer ring of the main bearing may be secured to the nacelle structure and that the rotor hub and planet carrier may be rotatably supported by the inner ring of the bearing. - In the aforedescribed constructions the sun, planet and ring gears are all substantially aligned with one another as considered in an axial direction parallel with the axis of rotation of the planet carrier. A further feature common to the described embodiments of the invention is that the main bearing comprises an inner ring bearing surface the diameter of which is greater than that of the toothed surface of the ring gear. The substantially direct attachment of the rotor hub to the main bearing results in provision of a torque transmission path which at all radial positions inwards of the toothed surface of the ring gear is substantially independent of the force transmission path by which bending and other forces other than those causing rotation about the rotational axis Y, are transmitted to the nacelle support structure.
- A benefit arising from the drive assembly, and the gear transmission unit of the present invention as used in a wind turbine is that the overhung loads generated by the wind turbine rotor blades have only a minimal effect on the planet driving components and on the gear meshing contact of the planetary gear stage. This allows for an increased power rating of the gear transmission unit or a reduction of dimension for a given power rating as compared with hitherto known constructions. It is also to be appreciated that the forces generated in gear meshing of the planets have only a minimal effect on the load distribution over the bearing rollers in the main bearing, thus increasing the load capacity of the main bearing or allowing for reduction of dimensions of that bearing for a given load capability.
Claims (21)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/341,575 US7335128B2 (en) | 2000-08-15 | 2006-01-30 | Drive assembly for wind turbines |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0020014A GB0020014D0 (en) | 2000-08-15 | 2000-08-15 | Bearing configuration for gear drive |
GB0020014.7 | 2000-08-15 | ||
GB0101715A GB0101715D0 (en) | 2001-01-23 | 2001-01-23 | Drive Transmission for wind turbines |
GB0101715.1 | 2001-01-23 | ||
US10/344,673 US7011598B2 (en) | 2000-08-15 | 2001-08-03 | Drive assembly for wind turbines |
PCT/IB2001/001395 WO2002014690A1 (en) | 2000-08-15 | 2001-08-03 | Drive assembly for wind turbines |
US11/341,575 US7335128B2 (en) | 2000-08-15 | 2006-01-30 | Drive assembly for wind turbines |
Related Parent Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10344673 Division | 2001-08-03 | ||
US10/344,673 Division US7011598B2 (en) | 2000-08-15 | 2001-08-03 | Drive assembly for wind turbines |
PCT/IB2001/001395 Division WO2002014690A1 (en) | 2000-08-15 | 2001-08-03 | Drive assembly for wind turbines |
Publications (2)
Publication Number | Publication Date |
---|---|
US20060205561A1 true US20060205561A1 (en) | 2006-09-14 |
US7335128B2 US7335128B2 (en) | 2008-02-26 |
Family
ID=26244839
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/344,673 Expired - Lifetime US7011598B2 (en) | 2000-08-15 | 2001-08-03 | Drive assembly for wind turbines |
US11/341,575 Expired - Fee Related US7335128B2 (en) | 2000-08-15 | 2006-01-30 | Drive assembly for wind turbines |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/344,673 Expired - Lifetime US7011598B2 (en) | 2000-08-15 | 2001-08-03 | Drive assembly for wind turbines |
Country Status (9)
Country | Link |
---|---|
US (2) | US7011598B2 (en) |
EP (1) | EP1311759B1 (en) |
JP (1) | JP4308516B2 (en) |
CN (1) | CN1295432C (en) |
AU (1) | AU2001276593A1 (en) |
DE (1) | DE01954251T1 (en) |
DK (1) | DK1311759T3 (en) |
ES (1) | ES2228292T3 (en) |
WO (1) | WO2002014690A1 (en) |
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Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1783780A (en) * | 1927-05-04 | 1930-12-02 | Amos J Evans | Driving-gear mechanism for motor vehicles |
US3043155A (en) * | 1958-11-24 | 1962-07-10 | Hough Co Frank | Planetary type axle assembly |
US3756095A (en) * | 1971-08-30 | 1973-09-04 | Envirotech Corp | Ring gear arrangement in a planetary drive |
US3792629A (en) * | 1971-12-30 | 1974-02-19 | Mc Donnell Douglas Corp | Speed reducer with ring and planet gears having different circular pitches |
US4020716A (en) * | 1975-02-14 | 1977-05-03 | Magyar Vagon- Es Gepgyar | Planetary transmission wheel drive mechanism |
US4132134A (en) * | 1977-06-24 | 1979-01-02 | Caterpillar Tractor Co. | Vehicle final drive assembly |
US4183266A (en) * | 1976-04-14 | 1980-01-15 | Kabushiki-Kaisha Fujikoshi | Shaft supporting apparatus for planetary gear reduction device |
US5505547A (en) * | 1994-04-05 | 1996-04-09 | Mutsuba Electric Mgf. Co., Ltd. | Support structure for power steering drive and manufacturing method thereof |
US5663600A (en) * | 1995-03-03 | 1997-09-02 | General Electric Company | Variable speed wind turbine with radially oriented gear drive |
US5813938A (en) * | 1995-03-20 | 1998-09-29 | Linde Aktiengesellschaft | Wheel mounting hub system |
US6176804B1 (en) * | 1998-06-18 | 2001-01-23 | Valmet Voimansiirto Oy | Planetary gear train for a wind power station |
US6312161B1 (en) * | 2000-03-31 | 2001-11-06 | The Timken Company | End cap for bearing assembly |
US6459165B1 (en) * | 1999-04-12 | 2002-10-01 | Winergy Ag | Drive for a windmill |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05164037A (en) * | 1991-12-13 | 1993-06-29 | Mitsubishi Heavy Ind Ltd | Wind power generation device |
EP0792415B2 (en) | 1994-10-07 | 2007-08-29 | Windtec Consulting GmbH | Planetary gear for wind turbines |
DE29609794U1 (en) | 1996-06-03 | 1996-08-22 | aerodyn GmbH, 24768 Rendsburg | Gear-generator combination |
-
2001
- 2001-08-03 DK DK01954251.3T patent/DK1311759T3/en active
- 2001-08-03 ES ES01954251T patent/ES2228292T3/en not_active Expired - Lifetime
- 2001-08-03 CN CNB018142443A patent/CN1295432C/en not_active Expired - Lifetime
- 2001-08-03 WO PCT/IB2001/001395 patent/WO2002014690A1/en active Application Filing
- 2001-08-03 DE DE01954251T patent/DE01954251T1/en active Pending
- 2001-08-03 US US10/344,673 patent/US7011598B2/en not_active Expired - Lifetime
- 2001-08-03 JP JP2002519799A patent/JP4308516B2/en not_active Expired - Fee Related
- 2001-08-03 AU AU2001276593A patent/AU2001276593A1/en not_active Abandoned
- 2001-08-03 EP EP01954251A patent/EP1311759B1/en not_active Expired - Lifetime
-
2006
- 2006-01-30 US US11/341,575 patent/US7335128B2/en not_active Expired - Fee Related
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1783780A (en) * | 1927-05-04 | 1930-12-02 | Amos J Evans | Driving-gear mechanism for motor vehicles |
US3043155A (en) * | 1958-11-24 | 1962-07-10 | Hough Co Frank | Planetary type axle assembly |
US3756095A (en) * | 1971-08-30 | 1973-09-04 | Envirotech Corp | Ring gear arrangement in a planetary drive |
US3792629A (en) * | 1971-12-30 | 1974-02-19 | Mc Donnell Douglas Corp | Speed reducer with ring and planet gears having different circular pitches |
US4020716A (en) * | 1975-02-14 | 1977-05-03 | Magyar Vagon- Es Gepgyar | Planetary transmission wheel drive mechanism |
US4183266A (en) * | 1976-04-14 | 1980-01-15 | Kabushiki-Kaisha Fujikoshi | Shaft supporting apparatus for planetary gear reduction device |
US4132134A (en) * | 1977-06-24 | 1979-01-02 | Caterpillar Tractor Co. | Vehicle final drive assembly |
US5505547A (en) * | 1994-04-05 | 1996-04-09 | Mutsuba Electric Mgf. Co., Ltd. | Support structure for power steering drive and manufacturing method thereof |
US5663600A (en) * | 1995-03-03 | 1997-09-02 | General Electric Company | Variable speed wind turbine with radially oriented gear drive |
US5813938A (en) * | 1995-03-20 | 1998-09-29 | Linde Aktiengesellschaft | Wheel mounting hub system |
US6176804B1 (en) * | 1998-06-18 | 2001-01-23 | Valmet Voimansiirto Oy | Planetary gear train for a wind power station |
US6459165B1 (en) * | 1999-04-12 | 2002-10-01 | Winergy Ag | Drive for a windmill |
US6312161B1 (en) * | 2000-03-31 | 2001-11-06 | The Timken Company | End cap for bearing assembly |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110021309A1 (en) * | 2006-11-03 | 2011-01-27 | Schaeffler Kg | Bearing arrangement for the rotatable mounting of a planet gear on a planet carrier |
US20090289460A1 (en) * | 2007-01-31 | 2009-11-26 | Anton Bech | Wind Turbine With A Drive Train |
US8403786B2 (en) * | 2007-01-31 | 2013-03-26 | Vestas Wind Systems A/S | Wind turbine with a drive train |
WO2010098815A1 (en) * | 2009-02-28 | 2010-09-02 | Ener2 Llc | Wind turbine |
US20130053210A1 (en) * | 2010-04-14 | 2013-02-28 | Miba Gleitlager Gmbh | Gear train for a wind turbine |
US8840521B2 (en) * | 2010-04-14 | 2014-09-23 | Miba Gleitlager Gmbh | Gear train for a wind turbine |
Also Published As
Publication number | Publication date |
---|---|
US7335128B2 (en) | 2008-02-26 |
DE01954251T1 (en) | 2005-05-04 |
CN1447880A (en) | 2003-10-08 |
ES2228292T3 (en) | 2013-02-12 |
WO2002014690A1 (en) | 2002-02-21 |
JP4308516B2 (en) | 2009-08-05 |
US7011598B2 (en) | 2006-03-14 |
EP1311759A1 (en) | 2003-05-21 |
US20040038770A1 (en) | 2004-02-26 |
AU2001276593A1 (en) | 2002-02-25 |
ES2228292T1 (en) | 2005-04-16 |
CN1295432C (en) | 2007-01-17 |
EP1311759B1 (en) | 2012-11-07 |
JP2004506845A (en) | 2004-03-04 |
DK1311759T3 (en) | 2013-01-07 |
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